<template>  
  <el-container class="home-container">
    <el-header>
      <div>
        <img src="../assets/logo.png" alt="">
        <span>广告素材管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse ? '64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">展开收起</div>
        <el-menu
          background-color="#545c64"
          text-color="#fff"
          active-text-color="#409EFF" 
          :unique-opened="true"
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath">
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/' + subItem.path" 
              v-for="subItem in item.children" 
              :key="subItem.id"
              @click="saveNavState('/' + subItem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
import {getMenus} from '../api/menu.js'
// import Welcome from './Welcome'

export default {
  data() {
    return {
      menulist: [],
      iconsObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iocnfont icon-baobiao'
      },
      isCollapse: false,
      // 为激活的链接地址
      activePath: ''
    }
  },
  created() {
    this._getMenuList(),
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    },
    async _getMenuList() {

      // promise获取，不用async,await
      // getMenus().then((res) => {
      //   console.log(res);
      // })

      // api封装
      const {data: res} = await getMenus()
      console.log(res)
      this.menulist = res.data
      
      // const {data: res} = await this.$http.get('/menus')
      // console.log(res);
      // this.menulist = res.data
    }
  },
  components: {
    // Welcome
  }
}
</script>

<style lang="less" scoped>
  .home-container{
    height: 100%;
  }
  
  .el-header{
    background:#373d41;
    display: flex;
    justify-content: space-between;
    align-items: center;
    >div {
      display: flex;
      align-items: center;
      span{
        margin-left: 10px;
        color: #ffffff;
        font-size: 20px;
      }
    }
    img{
      height: 40px;
      width: 40px;
    }
  }

  .el-aside {
    background-color: #333744;
    .el-menu{
      border-right: 0px
    }
  }

  .el-main{
    background-color: #eaedf1;
  }



  .iconfont {
    margin-right: 10px;
  }
</style>
